Trigger mechanism for guns.



' No. 740,716. y PATBNTED 00T. 190s.

K. VVLLER. 4TRIGGER MBZCHANISM POR GUNS.

. PPLIGATION FILED APR. 4. 190.3.

N0 MODEL. @SHEETS-SHEET 2.

` No. 140,716/ PATENTBD 00T. 6, 1903. K. VLLER. `TRIGGE'R MBUHANISM PoRGUNS.

`AlPLIQA'lIO'N FILED APB.. fi. 1903.

No MODEL. s SHEETS-SHEETS.

s NoRms PETERS oo.. Puo'raumo.. wAsHlNToN. o. c.

itat-10h16.

UNITED .STATES resented october e, 190e.

PATENT OFFICE,

TRIGGER MECHANISM FOR GUNS. l

SPECIFICATION forming part of Letters Patent No. 740,716, dated October6, 1963.

Application filed .1pm 4", 190s. serial No. 151,191. (No model.)

To a/ZZ wiz/m it may, concern:

Be it known that LKARL VLLER, engineer, a subject of the King ofPrussia, Em-

peror of Germany, residing at Dusseldorf, in the Kingdom ofPrussia andGerman Empire, have invented certain new and useful Improvements in orRelating to TriggerMechanism for Guns, of which the following is aspeciiication.

My invention relates to a trigger mechanism a rotatable pawl for holdingand releasing `the bolt, as well as a catch for locking and releasingthe pawl. When the compressionlever is swung in one direction, the pawlheld by the catch compresses the spring of the liiring-bolt until thecatch strikes with its outer edge against the Wall of the recess andbecomes disengaged from the notch inv the flhe latter thereupon yieldsand the bolt-spring propels the bolt forward. When the compression-leveris pushed in the other direction, (say by a spring,) it Aagain bringsthe pawl into engagement with the bolt, and the catch, striking again stthe other wall of the recess, engages with the notch of the pawl andlocks it. The catch and the pawl during that time being mounted on thecompressionlever are caused by it to participate in its movement. It ispossible to arrange or construct them so that they are flush vwith thesurface of the compression Jever. Finally,` the compression-leveritselfdoes not require any fixed pivot, as it turns between the Walls of therecess in which it isiarranged. It is sufficient to mount the triggerrotatably on an accessible pin 'arranged Vin the breechblock and tohinge the compression-lever. to a lug or extension on the trigger. Thisresults in the trigger imechanism according to this invention having theadvantage over those hitherto known of being easily removableindependently of the bolt or firing-pin without necessitating the use of`tools and, further, of enabling the trigger in case of a misflre to bepulled over and over again and, Vnally, of permitting in case of a misrethe parts of the frm the center of the pivot 10.

trigger-action and of the bolt to be replaced without removing thebreech-block from its locked position. A Y In the accompanying drawingsa trigger mechanism according to my invention is illustrated by way ofexample. Figure 1 is a cross-section of the breechblock, showing thetrigger mechanismin the position of rest. Fig. 2 is a similar view withthe bolt or iiringpin cocked. Fig. 3 is a similar view with the boltreleased. Fig. 4L

shows the cocking -pawl, Fig. 5 the catch, Fig. 6 the compression-lever,Fig. 7 a front elevation of Fig. l, and Fig. 8 the trigger in elevation.i. The trigger mechanism is arranged in a recess 3 in the breech-block,having a rectangular cross-section and extending in height as far as thebore 1 for the bolt 2, `the length from back to front of said recessdepending on the Width and extent of movement of the compression-lever4, carrying the catch 5 and thel cooking-pawl 6, the Width beingdetermined by the thickness of the compressionlever. Figs. Il, 5, and 6show various parts separately in different views. The disk 6 of the pawlis provided with a projection 7 and with a concentric round pin 8,'adapted to fit i'n the hole 11 in the recessed upper part of the lever4. The right-angled notch 9, opposite the projection 7 ,serves forengaging the end of the catch 5,' Fig. 5. The latter has two arms, thearm used for locking being Wedge-shaped, while the other arm or end isWiderand is limited by an arc of circle drawn The compression-lever 4 iscut away o'r recessed to receive the catch 5 and the cocking-paWl-G.Thepin S of the pawl is seated in the bore 11, and the circular partrests circumferentially, for the purpose of relieving pressure on thepin, against the wall 12 of the compressionlever 4, limited by anarc-drawn with the same radius. The recess for the cockingpawl mergesinto another recess having an enlarged shape of the cocking-pawl'. Ahole 13 is provided to receive the pin 10 of the catch, and the circularedges 14 and 15 serve as abutments or guides. The lateral face of thecompression-lever is cut away on both sides, and openings 16 and 17enable the edges 18 and 19 of the pawl or catch to pro- IDO A. the wall28 of the recess.

ject through. On the other side of the lever, at its lower end, there isa semicircular recess with a concentric projecting pin 20. This pinreceives a correspondingly-shaped boss 21 on the inner end of thetrigger 22, shaped somewhat like a bell-crank lever, Figs. 1, 2, 3, and8. The latter is automatically re turned to its position of rest afterit has been pulled by a torsion-spring 23, Fig. 1.

The recessin g of the compression-lever and the introduction into therecesses of the catch and pawl result in a construction having flatsides with no projections beyond the surfaces of the lever. The recessor slot 3, which is of the same width throughout, receives thecompression-lever with the two pawls. The compression-lever has onlysufficient play to enable it to slide easily into the recess 3. In thisway the pawls need not be screwed or keyed to the compression-lever, asthe Walls of the recess hold them in place. After removal of the bolt 24the mechanism can be removed and the parts cleared, repaired, or changedwithout necessitating the use of any tools.

Fig. l shows the trigger mechanism in the position of rest. The spring23 holds the trigger 22 in position and acts on the trigger inopposition to the direction of pull, which direction is shown in Figs. 2and 3 by the arrows. The projection 7 of the cooking-pawl 6 engages witha projection on the bolt 2, which is slightly withdrawn from the primerduring the preliminary partial compression of its spring. The catch orpawl locks the pawl 6, its wedge-shaped arm resting with the edge 18against the wall 25 of the recess. Movement of the compression-lever 4,hinged by means of its pin 20 to the boss 21 of the trigger 22, isprevented by the preliminary compression of the torsion-spring 23, whichholds the trigger in position.

In Fig. 2 the trigger 22 has been pulled in the direction of the arrow.The other end 21 of the trigger consequently moves forward and carrieswith it the lower end of the compression-lever, the edges 26 and 27 ofwhich had up to then rested against the walls and 28 of the recess. Bythis movement the projection 7 of the pawl 6 forces back the bolt 2, asthe catch 5 still locks the pawl and does not release it until justbefore the trigger 22 has been turned so far that the lateral face 29 ofthe compression-lever comes against In this movement the edge 19 of thecatch 5, projecting through the opening 17, comes in contact with thewall of the recess and thereupon turns about its pivot 10 and itswedge-shaped end is forced out of engagement with the notch 9 in thepawl 6. The spring of the bolt being thus released `throws the latterforward, Fig. 3. The released pawl 6 thereupon is moved into theposition shown in Fig. 3. The catch 5 has turned so far that its otheredge 18 projects through the opening 16. On the release of the triggerit is returned into its position of rest by the torsion-spring, and theboss 2l again moves the compression-lever in the opposite directionuntil the lateral face 30 rests against the wall 25. During thismovement the projection 7 of the pawl is brought into the position shownin Fig. 1 and again engages with the projection of the bolt. The edge 1Sof the catch projecting through the opening 16 is forced back and againlocks the pawl. During this locking movement the pawl pulls the boltslightly back, so that the firing-point is just retired into the block.In order to examine or replace the bolt without removing the triggermechanism, the bolt is provided with a groove 31, open in front, so thatafter removing the closing-plate 32 the bolt can be withdrawn from theback.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. A trigger mechanism comprising a compression-lever,arranged at right angles to the bolt and operated by a trigger-lever andprovided with a pivoted cooking-pawl, the lever normally resting withtwo diametrically opposite faces against the walls of a recess in whichit operates in such way that when the compression-lever is turned in onedirection, the bolt is withdrawn and its spring compressed by themovement of the cocking-pawl held by a catch pivoted on thecompression-lever and having lateral edges adapted to project beyond thelateral edges of the lever, which catch on striking against the wall ofthe recess, releases the cooking-pawl and consequently the withdrawnbolt, while when the compression-lever is turned in the oppositedirection, it returns the cocking pawl into engagement with the bolt inits position of rest, the catch, on striking against the other wall ofthe recess being turned so as to rengage the cooking-pawl,substantiallyas described.

2. A trigger mechanism comprising a compression-lever decreasing in sizeytoward each end from the medial portion, whereby the intersections ofthese tapering sides form projections on each side of the lever on whichthe same may turn as on a fulcrum, a breechblock provided with a recess,the walls of which engage the projections of the coinpression-lever, anda trigger-lever pivoted in said breech-block.

3. Trigger mechanism of the kind describedcomprising in combination witha block having a recess a compression-lever provided with two pawls, thelever recessed to receive the same and having at both sides openingsthrough which the edges of one of the pawls can project in the movementof the mechanism for the purpose of engaging or releasing the other pawlwhen the compression-lever strikes against the walls of the said recess,substantially as described.

4. A trigger mechanism comprising a compression-lever provided with aprojection on IOO IIO

each side thereof on Which the levermay turn In testimonywhereof I havehereunto set ason a fulcium,and said lever further pio-` my hand inpresence of two subscribing Witro videl with recesses to receive thecockingmesses. t i paw and its catch or paWl, the pivot-pins of 5 whichengage in holes in the compression-le KARL VOLLER' ver, so that theWhole presents a hat surface Witnesses: and may be easily Withdrawn andreplaced, VILLIAM ESSENWEIN, substantially' as described. PETER LIEBER.

